EP4216473A1 - Procédé et appareil de transmission, terminal et dispositif de réseau - Google Patents

Procédé et appareil de transmission, terminal et dispositif de réseau Download PDF

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Publication number
EP4216473A1
EP4216473A1 EP20953539.2A EP20953539A EP4216473A1 EP 4216473 A1 EP4216473 A1 EP 4216473A1 EP 20953539 A EP20953539 A EP 20953539A EP 4216473 A1 EP4216473 A1 EP 4216473A1
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EP
European Patent Office
Prior art keywords
pdcch transmission
signaling
dci signaling
pdcch
transmission occasions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP20953539.2A
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German (de)
English (en)
Inventor
Mingju Li
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Publication of EP4216473A1 publication Critical patent/EP4216473A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal

Definitions

  • the disclosure relates to a field of communication technology, in particular to a transmission method, a transmission apparatus, a terminal, and a network device.
  • NR 5G New Radio
  • the network device can use multiple TRPs to provide services to a terminal. For example, in order to improve the transmission reliability and transmission efficiency of the Physical Downlink Control Channel (PDCCH), the same Downlink Control Information (DCI) signaling can be sent to the terminal by multiple TRPs.
  • TRPs Transmission Reception Points
  • DCI Downlink Control Information
  • Embodiments of the disclosure provide a transmission method, a transmission apparatus, a terminal, and a network device.
  • the technical solution is provided as follows.
  • a transmission method includes:
  • a transmitting method includes:
  • a transmission apparatus includes: an obtaining module, a determining module, and a receiving module.
  • the obtaining module is configured to obtain a number of PDCCH transmission occasions.
  • the determining module is configured to determine, based on the number of PDCCH transmission occasions and a number of transmission resources, a DCI signaling receiving mode.
  • the receiving module is configured to receive a DCI signaling based on the DCI signaling receiving mode.
  • a transmission apparatus includes: a determining module, an indicating module, and a sending module.
  • the determining module is configured to determine a number of PDCCH transmission occasions.
  • the indicating module is configured to indicate the number of PDCCH transmission occasions to a terminal, in which the terminal is configured to determine a DCI signaling receiving mode based on the number of PDCCH transmission occasions and a number of transmission resources.
  • the sending module is configured to send a DCI signaling to the terminal.
  • a terminal includes: a processor, and a memory for storing instructions executable by the processor.
  • the processor is configured to load and execute the executable instructions to implement the above method for transmitting a DCI signaling.
  • a network device includes: a processor, and a memory for storing instructions executable by the processor.
  • the processor is configured to load and execute the executable instructions to implement the above method for transmitting a DCI signaling.
  • a computer readable storage medium When instructions stored in the computer readable storage medium are executed by a processor, the above method for transmitting a DCI signaling is implemented.
  • the terminal when the terminal receives the DCI signaling, the terminal may determine the number of PDCCH transmission occasions, and determine the DCI signaling receiving mode based on the number of PDCCH transmission occasions and the number of transmission resources. For example, when the number of PDCCH transmission occasions is equal to the number of transmission resources, it means that the complete content of the same DCI signaling is transmitted each time on each PDCCH transmission resource. In this case, the reception of the DCI signaling is performed in a mode of transmitting complete content of one DCI signaling on each transmission resource, i.e., the repeated transmission of the same DCI signaling is realized on multiple transmission resources.
  • the terminal can correctly decode the DCI signaling based on the DCI signaling received on one of the transmission resources, the terminal needs not to receive this DCI signaling on other transmission resources. Otherwise, the terminal can also perform soft combination on the DCI signaling transmitted through several transmissions, to further improve the decoding success rate. For another example, if the number of PDCCH transmission occasions is less than the number of transmission resources, it means that a part of the contents of the same DCI signaling is transmitted on each PDCCH transmission resource.
  • the reception of the DCI signaling is performed in a mode of transmitting complete content of the same DCI signaling on multiple transmission resources (i.e., each transmission resource transmits a part of the content of the same DCI signaling), i.e., the contents transmitted on the multiple transmission resources can be combined to obtain one complete DCI signaling.
  • the DCI signaling receiving mode determined in the above way, it is ensured that the terminal can receive and decode the DCI signaling correctly, thereby improving the communication quality.
  • first, second, and third may be used in this disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information.
  • second information may also be referred to as the first information.
  • if' as used herein can be interpreted as "when", “while” or "in response to determining”.
  • FIG. 1 is a schematic diagram of a communication system according to an exemplary embodiment of the disclosure. As shown in FIG. 1 , the communication system may include: a network side 12 and a terminal 13.
  • the network side 12 includes a plurality of network devices 120.
  • the network device 120 may be a base station.
  • the base station is a device deployed in an access network to provide a wireless communication function for the terminal.
  • the base station can be either a base station of a serving cell of the terminal 13 or a base station of an adjacent cell of the serving cell of the terminal 13.
  • the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and TRPs.
  • the name of the device having the functions of the base station may be different, for example, it is called gNodeB or gNB in the 5G NR system.
  • the description of "base station" may change as the communication technology evolves.
  • the network device 120 may also be a Location Management Function (LMF) entity. During communication in internet of vehicles, the network device 120 can also be an in-vehicle terminal device.
  • LMF Location Management Function
  • the terminal 13 may include a variety of handheld devices, in-vehicle devices, wearable devices, computing devices with wireless communication capabilities, or other processing devices connected to a wireless modem, and various forms of user devices, such as Mobile Station (MS), terminals, Internet of Things (IoT) devices, and Industry Internet of Things (IIoT) devices.
  • MS Mobile Station
  • IoT Internet of Things
  • IIoT Industry Internet of Things
  • the network device 120 and the terminal 13 communicate with each other via a certain radio interface technology, such as a Uu interface.
  • the complete content of the same DCI signaling is sent on each PDCCH transmission resource provided by each TRP, i.e., multiple TRPs send the same DCI signaling repeatedly multiple times.
  • the terminal if the terminal can correctly decode the DCI signaling based on the DCI signaling received on one of the transmission resources, the terminal does not have to receive the DCI signaling on other transmission resources. Otherwise, the terminal can also perform soft combination on the DCI signaling transmitted through several transmissions, to further improve the decoding success rate and enhance the reliability of PDCCH transmission.
  • the terminal can obtain the complete content of the DCI signaling by receiving parts of the complete content of the DCI signaling on multiple TRPs for stitching and decoding, to improve the reliability of PDCCH transmission (the lower the transmission bit rate, the higher the reliability).
  • the DCI signaling cannot be successfully decoded.
  • the terminal needs to know which transmitting mode is currently used, otherwise, if the terminal adopts the wrong mode to receive, the DCI signaling may not be received correctly, and the communication quality may be decreased.
  • the communication system and the business scenario described in this embodiment is to illustrate the technical solution of this embodiment more clearly, which do not constitute a limitation of the technical solution provided by this embodiment. It is known to those skilled in the art that the technical solution provided by this embodiment is equally applicable to similar technical problems as the communication system evolves and new business scenarios emerge.
  • FIG. 2 is a flowchart of a transmission method according to an exemplary embodiment of the disclosure. As shown in FIG. 2 , the method includes the following.
  • a terminal obtains a number of PDCCH transmission occasions.
  • the number of PDCCH transmission occasions is the number of times multiple TRPs transmit the same DCI signaling.
  • the transmission reliability can be improved by repeated transmission.
  • the terminal determines a DCI signaling receiving mode based on the number of PDCCH transmission occasions and a number of transmission resources.
  • each PDCCH transmission resource can either transmit the complete content of the DCI signaling (i.e., each TRP transmits the DCI signaling once), or transmit only part of the complete content of the DCI signaling (i.e., multiple TRPs transmit the DCI signaling once together), which may cause different relations between the number of PDCCH transmission occasions and the number of transmission resources. From the relation, the way of sending the same DCI signaling by multiple TRPs can be deduced, and the corresponding receiving mode can be determined, thereby realizing the correct reception of the DCI signaling.
  • the terminal receives a DCI signaling based on the DCI signaling receiving mode.
  • the number of PDCCH transmission occasions is determined, and the DCI signaling receiving mode can be determined based on the number of PDCCH transmission occasions and the number of transmission resources. For example, when the number of PDCCH transmission occasions is equal to the number of transmission resources, it means that the complete content of the same DCI signaling is transmitted on each PDCCH transmission resource, and in this case, the reception of the DCI signaling is performed in a mode of transmitting complete content of one DCI signaling on each transmission resource, i.e., the mode of transmitting the same DCI signaling several times on multiple transmission resources is adopted.
  • the terminal can correctly decode the DCI signaling based on the DCI signaling received on one of the transmission resources, the terminal does not have to receive the DCI signaling on other transmission resources. Otherwise, the terminal can also perform soft combination on the DCI signaling transmitted through several transmissions, to further improve the decoding success rate.
  • the number of PDCCH transmission occasions is less than the number of transmission resources, it means that a part of the complete content of the same DCI signaling is transmitted on each PDCCH transmission resource, and the reception of the DCI signaling is performed in a mode of transmitting the complete content of the same DCI signaling on multiple transmission resources (i.e., each transmission resource transmits a part of the content of the same DCI signaling), i.e., the DCI signaling is received by combining the contents transmitted on the multiple transmission resources into one complete DCI signaling.
  • the DCI signaling receiving mode is determined in the above way, it is ensured that the terminal can receive and decode the DCI signaling correctly, thereby improving the communication quality.
  • the PDCCH transmission occasion refers to the complete transmission of a DCI signaling.
  • each of the PDCCH transmission occasions corresponds to one PDCCH transmission resource, and each PDCCH transmission resource is used to transmit complete content of a first DCI signaling.
  • each PDCCH transmission occasion corresponds to multiple PDCCH transmission resources, and each PDCCH transmission resource is used to transmit a part of content of a second DCI signaling, and the parts of content of the second DCI signaling transmitted on multiple PDCCH transmission resources corresponding to one PDCCH transmission occasion are combined to obtain the complete content of the second DCI signaling.
  • obtaining the number of PDCCH transmission occasions includes:
  • the embodiments of the disclosure provide two methods for obtaining the number of PDCCH transmission occasions.
  • the first method is to obtain the number locally in which the transmission number is written in the local memory and the protocol configuration in advance.
  • the second method is to obtain the number from a network device in real time, e.g., by the indication signaling.
  • the indication signaling is at least one of a RRC signaling, a MAC signaling, or a DCI signaling.
  • the network device can either indicate in the indication signaling the number of PDCCH transmission occasions directly or indirectly using other parameters, for example by indicating the number of TCI states for PDCCH transmission, the number of DMRSs for PDCCH demodulation, the PDCCH transmission method. Some of these parameters are directly equal to the number of PDCCH transmission occasions, and some can be used to determine the number of PDCCH transmission occasions.
  • determining the number of PDCCH transmission occasions based on the indication signaling may include the following.
  • the number of PDCCH transmission occasions is determined from the indication signaling carrying the number of PDCCH transmission occasions.
  • the number of PDCCH transmission occasions is determined from the indication signaling carrying the number of TCI states, in which the number of PDCCH transmission occasions is equal to the number of TCI states.
  • the TCI state is used to indicate the beam used for PDCCH transmission.
  • the number of PDCCH transmission occasions is determined from the indication signaling carrying a PDCCH transmission method and a number of TCI states, in which the number of PDCCH transmission occasions is equal to 1 or equal to the number of TCI states.
  • the PDCCH transmission method includes Frequency-Division Multiplexing (FDM), Space-Division Multiplexing (SDM), intra-slot Time-Division Multiplexing (intra-slot TDM), and inter-slot TDM. These four methods include the mode of transmitting the complete content of the same DCI signaling on each transmission resource block and the mode of transmitting a part of content of the same DCI signaling on each transmission resource block. If each transmission resource block transmits the complete content of the DCI signaling, the number of PDCCH transmission occasions is equal to the number of TCI states. If each transmission resource block transmits a part of content of the DCI signaling, the number of PDCCH transmission occasions is equal to 1.
  • the number of PDCCH transmission occasions is determined from the indication signaling carrying the number of DMRSs, in which the number of PDCCH transmission occasions is equal to the number of DMRSs.
  • Different DMRSs differ in at least one of a DMRS port, a sequence, a time domain resource, a frequency domain resource, or a Code Division Multiplexing (CDM) group.
  • CDM Code Division Multiplexing
  • the number of DMRSs indicated in the indication signaling is M, and M is greater than or equal to 2.
  • the port of each DMRS in the M DMRSs is different; or,
  • At least N transmission resources of the multiple PDCCH transmission resources correspond to N TCI states respectively, in which N is greater than or equal to 2.
  • all the PDCCH transmission resources correspond to the same Control Resource Set (CORESET).
  • CORESET Control Resource Set
  • At least 2 PDCCH transmission resources among all the PDCCH transmission resources correspond to different CORESETs.
  • different CORESETs correspond to different TCI states and are sent by different TRPs.
  • the above parameter carried in the indication signaling is not always equal to the number of PDCCH transmission occasions. Only when a parameter is equal to the number of PDCCH transmission occasions, the network device uses the parameter to indicate the number of PDCCH transmission occasions. When a parameter is not equal to the number of PDCCH transmission occasions, the network device does not use the parameter to indicate the number of PDCCH transmission occasions.
  • determining the DCI signaling receiving mode based on the number of PDCCH transmission occasions and the number of transmission resources includes:
  • each transmission resource transmits the DCI signaling once;
  • each transmission resource transmits a part of content of the same DCI signaling
  • all the transmission resources together transmit the DCI signaling once.
  • the terminal When the terminal receives in a mode of transmitting the complete content of the same DCI signaling on each transmission resource, the terminal receives multiple copies of the complete content of the DCI signaling. In this case, if the terminal can correctly decode the DCI signaling based on the DCI signaling received on one of the transmission resources, the terminal does not have to receive the DCI signaling on other transmission resources. Otherwise, the terminal can also perform soft combination and decoding on the multiple copies of the complete content of the DCI signaling, thus ensuring the reliability of PDCCH transmission.
  • the terminal When the terminal receives in a mode of transmitting a part of content of the same DCI signaling on each transmission resource, the terminal receives multiple parts of content of the DCI signaling, and by splicing and decoding the multiple parts of content of the DCI signaling, i.e., by combining all the multiple parts of content of the DCI signaling transmitted on multiple transmission resource, the complete content of the DCI signaling is obtained, and the reliability of PDCCH transmission is ensured.
  • the method further includes: obtaining the number of transmission resources.
  • the number of transmission resources can be obtained in a similar way as the number of PDCCH transmission occasions, e.g., either locally or through an instruction.
  • any two PDCCH transmission resources are different in at least one of a time domain, a frequency domain, a space domain or a code domain.
  • FIG. 3 is a flowchart of a transmission method according to an exemplary embodiment of the disclosure. As shown in FIG. 3 , the method further includes the following.
  • a network device determines a number of PDCCH transmission occasions.
  • the network device indicates the number of PDCCH transmission occasions to a terminal, and the terminal determines, based on the number of PDCCH transmission occasions and a number of transmission resources, a DCI signaling receiving mode.
  • the network device When the network device determines the number of PDCCH transmission occasions, it can either send the number of PDCCH transmission occasions directly to the terminal or send other parameters that can indirectly indicate the number of PDCCH transmission occasions to the terminal, as long as the terminal can determine the number of PDCCH transmission occasions based on these parameters.
  • the network device sends the DCI signaling to the terminal.
  • the transmitting mode used by the network device corresponds to the receiving mode determined by the terminal. For example, when the terminal receives in a mode of transmitting the complete content of one DCI signaling on each transmission resource, the network device also sends in a mode of transmitting the complete content of one DCI signaling each time, i.e., the multiple transmission resources transmit the same DCI signaling for several times. In this case, if the terminal can correctly decode the DCI signaling based on the DCI signaling received on one of the transmission resources, the terminal may not have to receive the DCI signaling on other transmission resources. Otherwise, the terminal can perform the soft combination on the DCI signaling transmitted through several transmissions, to further improve the decoding success rate.
  • the network device When the terminal receives in a mode of transmitting the complete content of the same DCI signaling on multiple transmission resources (i.e., each transmission resource transmits a part of content of the same DCI signaling), the network device also sends in a mode of transmitting a part of content of the same DCI signaling each time, i.e., the parts of content transmitted on the multiple transmission resources are combined into one complete DCI signaling.
  • the network device indicates the number of PDCCH transmission occasions to the terminal, so that the terminal can determine the DCI signaling receiving mode by comparing the number of PDCCH transmission occasions with the number of transmission resources. For example, when the number of PDCCH transmission occasions is equal to the number of transmission resources, it means that the complete content of the same DCI signaling is transmitted on each PDCCH transmission resource, then the reception of the DCI signaling is performed in a mode of transmitting complete content of the DCI signaling on each transmission resource, i.e., the same DCI signaling transmitted for several times on the multiple transmission resources.
  • the terminal can correctly decode the DCI signaling based on the DCI signaling received on one of the transmission resources, the terminal does not have to receive the DCI signaling on other transmission resources. Otherwise, the terminal can also perform soft combination on the DCI signaling transmitted through several transmissions to further improve the decoding success rate.
  • the reception of the DCI signaling is performed in a mode of transmitting complete content of the same DCI signaling on multiple transmission resources (i.e., each transmission resource transmits a part of content of the same DCI signaling), i.e., the contents transmitted on multiple transmission resources are combined into one complete DCI signaling.
  • the DCI signaling receiving mode determined in the above way, it is ensured that the terminal can receive and decode the DCI signaling correctly, thereby improving the communication quality.
  • indicating the number of PDCCH transmission occasions to the terminal includes:
  • the indication signaling is configured to indicate the number of PDCCH transmission occasions.
  • the indication signaling is at least one of a RRC signaling, a MAC signaling, or a DCI signaling.
  • sending the indication signaling includes:
  • different DMRSs differ in at least one of a DMRS port, a sequence, a time domain resource, a frequency domain resource, or a CDM group.
  • the method further includes: indicating the number of transmission resources to the terminal.
  • the indication mode of the number of transmission resources is similar as the indication mode of the number of PDCCH transmission occasions.
  • the number of transmission resources can be carried directly in the instruction, or other parameters can be carried in the instruction to indirectly indicate the number of transmission resources.
  • any two PDCCH transmission resources are different in at least one of a time domain, a frequency domain, a space domain or a code domain.
  • FIG. 4 is a flowchart of a transmission method according to an exemplary embodiment of the disclosure. As shown in FIG. 4 , the method further includes the following.
  • a network device determines a number of PDCCH transmission occasions.
  • the network device determines the number of PDCCH transmission occasions based on a transmission protocol according to a network condition, a terminal priority or the like.
  • multiple TRPs are used for transmitting the same DCI signaling for several times.
  • the number of PDCCH transmission occasions can be indicated to the terminal to ensure that the terminal can receive correctly.
  • the network device sends an indication signaling, in which the indication signaling is configured to indicate the number of PDCCH transmission occasions.
  • the terminal receives the indication signaling.
  • the indication signaling is at least one of a RRC signaling, a MAC signaling, or a DCI signaling.
  • the terminal determines the number of PDCCH transmission occasions based on the indication signaling.
  • the PDCCH transmission occasion refers to the complete transmission of a DCI signaling.
  • each of the PDCCH transmission occasions corresponds to one PDCCH transmission resource, and each PDCCH transmission resource is configured to transmit the complete content of a first DCI signaling.
  • each PDCCH transmission occasion corresponds to multiple PDCCH transmission resources, and each PDCCH transmission resource is configured to transmit a part of content of a second DCI signaling. The parts of content of the second DCI signaling transmitted on the multiple PDCCH transmission resources corresponding to a single PDCCH transmission occasion are combined to obtain the complete content of the second DCI signaling.
  • the network device can either indicate the number of PDCCH transmission occasions directly in this indication signaling or use other parameters to indirectly indicate the number of PDCCH transmission occasions, for example by indicating the number of TCI states for PDCCH transmission, the number of DMRSs for PDCCH demodulation, and the PDCCH transmission method. Some of these parameters are directly equal to the number of PDCCH transmission occasions, and some can be further used to determine the number of PDCCH transmission occasions.
  • determining the number of PDCCH transmission occasions based on the indication signaling may include the following.
  • the number of PDCCH transmission occasions is determined from the indication signaling carrying the number of PDCCH transmission occasions.
  • the number of PDCCH transmission occasions is determined from the indication signaling carrying the number of TCI states, in which the number of PDCCH transmission occasions is equal to the number of TCI states.
  • the TCI state is used to indicate the beam used for PDCCH transmission.
  • the number of PDCCH transmission occasions is determined from the indication signaling carrying a PDCCH transmission method and the number of TCI states, in which the number of PDCCH transmission occasions is equal to 1 or equal to the number of TCI states.
  • the PDCCH transmission method includes FDM, SDM, intra-slot TDM, and inter-slot TDM. These four methods include the mode of transmitting the complete content of the same DCI signaling on each transmission resource block and the mode of transmitting a part of content of a DCI signaling on each transmission resource block. If each transmission resource block transmits the complete content of the same DCI signaling, the number of PDCCH transmission occasions is equal to the number of TCI states. If each transmission resource block transmits a part of content of the DCI signaling, the number of PDCCH transmission occasions is equal to 1.
  • the number of PDCCH transmission occasions is determined from the indication signaling carrying the number of DMRSs, in which the number of PDCCH transmission occasions is equal to the number of DMRSs.
  • Different DMRSs differ in at least one of a DMRS port, a sequence, a time domain resource, a frequency domain resource, or a CDM group.
  • the number of DMRSs indicated in the indication signaling is M, and M is greater than or equal to 2.
  • the port of each DMRS in the M DMRSs is different; or,
  • At least N transmission resources of the multiple PDCCH transmission resources correspond to N TCI states respectively, in which N is greater than or equal to 2.
  • all the PDCCH transmission resources correspond to the same CORESET. This scenario further includes the following cases.
  • At least 2 PDCCH transmission resources among all the PDCCH transmission resources correspond to different CORESETs.
  • different CORESETs correspond to different TCI states and are sent by different TRPs.
  • the above parameter carried in the indication signaling is not always equal to the number of PDCCH transmission occasions. Only when a parameter is equal to the number of PDCCH transmission occasions, the network device uses the parameter to indicate the number of PDCCH transmission occasions. When a parameter is not equal to the number of PDCCH transmission occasions, the network device does not use the parameter to indicate the number of PDCCH transmission occasions.
  • the terminal determines the DCI signaling receiving mode based on the number of PDCCH transmission occasions and the number of transmission resources.
  • determining the DCI signaling receiving mode based on the number of PDCCH transmission occasions and the number of transmission resources includes:
  • the method further includes: obtaining the number of transmission resources.
  • the number of transmission resources can be obtained in a similar way as the number of PDCCH transmission occasions, e.g., either locally or through an instruction.
  • any two PDCCH transmission resources are different in at least one of a time domain, a frequency domain, a space domain or a code domain.
  • the network device sends a DCI signaling to the terminal.
  • the terminal receives the DCI signaling based on the DCI signaling receiving mode.
  • the transmitting mode used by the network device corresponds to the receiving mode determined by the terminal. For example, when the terminal receives in a mode of transmitting the complete content of the same DCI signaling on each transmission resource separately, the network device also transmits in a mode of transmitting the complete content of the same DCI signaling on each transmission resource. When the terminal receives in a mode of transmitting the complete content of the same DCI signaling transmitted on multiple transmission resources (i.e., each transmission resource transmits a part of content of the same DCI signaling), the network device also transmits in a mode of transmitting a part of content of the same DCI signaling on each transmission resource, i.e., the contents transmitted by the multiple transmission resources are combined into one complete DCI signaling.
  • FIG. 5 is a flowchart of a transmission method according to an exemplary embodiment of the disclosure. As shown in FIG. 5 , the method includes the following.
  • the terminal obtains a number of PDCCH transmission occasions stored in a local memory and configured by protocol.
  • the number of PDCCH transmission occasions can be a default value configured by protocol or stored in the local memory in FIG. 5 , so that it is unnecessary to obtain the number of PDCCH transmission occasions from the network device each time.
  • this default value configured by protocol or stored in the local memory can also be updated.
  • the network device can still send the indication signaling to the terminal, which can be used to indicate whether the terminal starts repeated transmission of the DCI signaling, i.e., whether to send the same DCI signaling repeatedly by multiple TRPs.
  • the terminal determines a DCI signaling receiving mode based on the number of PDCCH transmission occasions and a number of transmission resources.
  • the implementation of the terminal determining the DCI signaling receiving mode at block 402 is similar to block 304, which is not described here.
  • the network device sends a DCI signaling to the terminal.
  • the terminal receives the DCI signaling based on the DCI signaling receiving mode.
  • the DCI signaling transmitting mode at block 403 is similar to block 305, which is not described here.
  • FIG. 6 is a block diagram of a transmission apparatus according to an exemplary embodiment of the disclosure.
  • the apparatus has functions which can implement the terminal in the above method embodiment, and the functions can be implemented by hardware or by hardware executing the corresponding software.
  • the apparatus includes: an obtaining module 501, a determining module 502, and a receiving module 503.
  • the obtaining module 501 is configured to obtain a number of PDCCH transmission occasions.
  • the determining module 502 is configured to determine, based on the number of PDCCH transmission occasions and a number of transmission resources, a DCI signaling receiving mode.
  • the receiving module 503 is configured to receive a DCI signaling based on the DCI signaling receiving mode.
  • the obtaining module 501 is configured to obtain the number of PDCCH transmission occasions stored in a local memory and configured by protocol; or obtain an indication signaling, and determine the number of PDCCH transmission occasions based on the indication signaling.
  • the indication signaling is at least one of a RRC signaling, a MAC signaling, or a DCI signaling.
  • the obtaining module 501 is configured to determine the number of PDCCH transmission occasions from the indication signaling carrying the number of PDCCH transmission occasions; or
  • different DMRSs differ in at least one of a DMRS port, a sequence, a time domain resource, a frequency domain resource, or a CDM group.
  • the determining module 502 is configured to in response to the number of PDCCH transmission occasions being equal to the number of transmission resources, receive in a mode of transmitting complete content of the same DCI signaling on each transmission resource, in which case, if the terminal can correctly decode the DCI signaling based on the DCI signaling received on one of the transmission resources, the terminal does not have to receive the DCI signaling on other transmission resources, otherwise, the terminal can also perform soft combination on the DCI signaling transmitted through several transmissions to further improve the decoding success rate; or in response to the number of PDCCH transmission occasions being less than the number of transmission resources, receive in a mode of transmitting complete content of the same DCI signaling on a plurality of transmission resources (i.e., each transmission resource transmits a part of content of the same DCI signaling), i.e., all the transmission resources together transmit the DCI signaling together once.
  • the obtaining module 501 is further configured to obtain the number of transmission resources.
  • any two PDCCH transmission resources are different in at least one of a time domain, a frequency domain, a space domain or a code domain.
  • FIG. 7 is a block diagram of a transmission apparatus according to an exemplary embodiment of the disclosure.
  • the apparatus has functions which can implement the network device in the above method embodiment, and the functions can be implemented by hardware or by hardware executing the corresponding software.
  • the apparatus includes: a determining module 601, an indicating module 602, and a sending module 603.
  • the determining module 601 is configured to determine a number of PDCCH transmission occasions.
  • the indicating module 602 is configured to indicate the number of PDCCH transmission occasions to a terminal, in which the terminal is configured to determine a DCI signaling receiving mode based on the number of PDCCH transmission occasions and a number of transmission resources.
  • the sending module 603 is configured to send a DCI signaling to the terminal.
  • the indicating module 602 is configured to send an indication signaling, in which the indication signaling is configured to indicate the number of PDCCH transmission occasions.
  • the indication signaling is at least one of a RRC signaling, a MAC signaling, or a DCI signaling.
  • the indicating module 602 is configured to send the indication signaling carrying the number of PDCCH transmission occasions;
  • different DMRSs differ in at least one of a DMRS port, a sequence, a time domain resource, a frequency domain resource, or a CDM group.
  • the indicating module 602 is configured to indicate the number of transmission resources to the terminal.
  • any two PDCCH transmission resources are different in at least one of a time domain, a frequency domain, a space domain or a code domain.
  • FIG. 8 is a block diagram of a terminal 700 according to an exemplary embodiment of the disclosure.
  • the terminal 700 may include: a processor 701, a receiver 702, a transmitter 703, a memory 704, and a bus 705.
  • the processor 701 includes one or more processing cores, and the processor 701 performs various functional applications and information processing by running software programs and modules.
  • the receiver 702 and the transmitter 703 may be implemented as a communication component, which may be a communication chip.
  • the memory 704 is connected to the processor 701 via the bus 705.
  • the memory 704 is configured to store at least one instruction, and the processor 701 is configured to execute the at least one instruction to implement steps in the method embodiments described above.
  • the memory 704 can be implemented by any type of volatile or non-volatile storage device or a combination thereof.
  • the volatile or non-volatile storage devices include, but are not limited to: disk or optical disks, Electrically Erasable Programmable Read-Only Memories (EEPROMs), Erasable Programmable Read-Only Memories (EPROMs), Static Random Access Memories (SRAMs), Read-Only Memories (ROMs), magnetic memories, flash memories, Programmable Read-Only Memories (PROMs).
  • a computer-readable storage medium stores at least one instruction, at least one program segment, a code set or an instruction set.
  • the at least one instruction, the at least one program, the code set or the instruction set are loaded and executed by the processor, to implement the transmission method provided by each of the method embodiments described above.
  • FIG. 9 is a block diagram of a network device 800 according to an exemplary embodiment of the disclosure.
  • the network device 800 may include: a processor 801, a receiver 802, a transmitter 803, and a memory 804.
  • the receiver 802, the transmitter 803, and the memory 804 are each connected to the processor 801 via a bus.
  • the processor 801 includes one or more processing cores, and the processor 801 executes the method performed by the network device in the transmission method provided by the embodiments of the disclosure by running software programs and modules.
  • the memory 804 is configured to store the software programs and the modules. In detail, the memory 804 may store an operating system 8041, and an application program module 8042 required for at least one function.
  • the receiver 802 is configured to receive communication data sent by other devices, and the transmitter 803 is configured to send communication data to other devices.
  • a computer-readable storage medium stores at least one instruction, at least one program segment, a code set or an instruction set.
  • the at least one instruction, the at least one program, the code set or the instruction set are loaded and executed by the processor to implement the transmission method provided by each of the method embodiments described above.
  • An exemplary embodiment of the disclosure also provides a transmission system, which includes a terminal and a network device.
  • the terminal is a terminal as provided in the embodiment shown in FIG. 8 .
  • the network device is a network device as provided in the embodiment shown in FIG. 9 .

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
EP20953539.2A 2020-09-15 2020-09-15 Procédé et appareil de transmission, terminal et dispositif de réseau Pending EP4216473A1 (fr)

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CN110169181B (zh) * 2017-01-06 2021-01-15 华为技术有限公司 通信方法、装置和系统
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